Per CDC: place portable generators ≥20 ft (CPSC now says 25 ft) from any window, door, or vent. Never run a generator in a garage, basement, or enclosed porch — even with the door open. CO is colorless, odorless, and kills before you wake up. The 25-foot rule is the number that saves lives.
The 5 home generators worth buying in 2026 (ranked by use case)
1. Best portable inverter — Honda EU7000iS
If your house priorities are fridge, furnace blower, well pump, internet, and a couple of bedroom circuits — this is the buy. The EFI engine starts on the first pull at 10°F, the inverter sine wave is clean enough for the boiler control board (the part that fails when a contractor-grade gen runs the furnace), and 52 dB is quiet enough that your neighbor doesn't call the cops at 2 a.m. The CO-Minder auto-shutoff is the feature that keeps your family alive.
| Spec | Value |
|---|---|
| Running / Surge watts | 5,500 / 7,000 W |
| Fuel | Gasoline (EFI) |
| Runtime @ 25% load | Up to 16 hrs (5.1 gal tank) |
| Noise | 52-58 dBA @ 23 ft |
| Price | $3,999-$4,999 |
- Honda EU7000iS on Amazon — $3,999-$4,999
2. Best portable conventional dual-fuel — Westinghouse WGen9500DF
9,500 running watts will carry a 4-ton AC startup, well pump, fridge, lights, and a few outlets if you stage the loads. Remote-start key fob from inside the house in a storm is a real feature, not a gimmick. It's loud — 74 dB is conversational-shout loud — and that's the tradeoff for the price. With an interlock kit and a licensed electrician, this is the smart middle path for most older homes.
| Spec | Value |
|---|---|
| Running / Surge watts | 9,500 / 12,500 W (gas) · 8,500 / 11,200 (LP) |
| Fuel | Dual — gasoline + propane |
| Runtime | 12 hrs gas / 7 hrs on 20 lb LP |
| Noise | ~74 dBA |
| Price | $1,200-$1,400 |
- Westinghouse WGen9500DF on Amazon — $1,200-$1,400
3. Best price-fighter dual-fuel — Champion 100165 (7500W)
Dual-fuel is the right answer because gasoline goes stale in 6 months and the propane tank in your garage doesn't. When the storm hits and the gas stations have no power for their pumps, you're running off the BBQ tank. 7,500 running watts hits the sweet spot for most 1,500-2,500 sqft houses. 3-year warranty backs it up.
| Spec | Value |
|---|---|
| Running / Surge watts | 7,500 / 9,375 W (gas) · 6,750 / 8,400 (LP) |
| Fuel | Gas + propane |
| Runtime | 8 hrs gas / 5.5 hrs LP |
| Noise | 74 dBA @ 23 ft |
| Price | $1,100-$1,300 |
- Champion 100165 on Amazon — $1,100-$1,300
4. Best whole-house standby — Generac Guardian 24kW (Model 7210)
24kW is the largest air-cooled unit Generac makes — handles 4-ton central AC + everything else. Includes the 200A whole-house ATS and Wi-Fi monitoring. The number the brochure won't tell you: the install. You need a concrete pad, gas-line upsize, 200A service-rated transfer switch, permit, and a licensed electrician — figure $3,500-$7,000 on top of the unit. Total $11K-$15K is the honest number. Worth it if you work from home, have well water, or someone in the house is on medical equipment.
| Spec | Value |
|---|---|
| Running / Surge watts | 24,000 W (LP) · 21,000 (NG) |
| Fuel | Natural gas or propane |
| Runtime | Unlimited on NG · 24-48 hrs on 500-gal LP |
| Noise | ~67 dB @ 23 ft |
| Price (unit + install) | $7,399 unit + $3,500-$7,000 install = $11K-$15K total |
- Generac Guardian 24kW on Amazon — $7,399 unit (install separate, licensed electrician)
5. Best solar + battery (no-gas alternative) — EcoFlow DELTA Pro Ultra
No gas runs, no oil changes, no 74 dB scream, no CO. 7,200W split-phase means it ties straight into the transfer switch and runs your house like a standby — silently. 6 kWh gets the fridge and lights through a 12-hour outage; stack a second battery and you're at 12 kWh for two days. Add 800W of panels and it recharges itself between storms. For townhouses, HOAs, and anyone who can't have a propane tank in the yard, this is the answer.
| Spec | Value |
|---|---|
| Running / Surge watts | 7,200 / 14,400 W (split-phase 240V) |
| Capacity | 6 kWh base, expandable to 90 kWh |
| Fuel | Battery + up to 5,600W solar input |
| Recharge | 1.7 hrs AC · 1.3 hrs solar (full sun) |
| Price | $4,849 base + panels |
- EcoFlow DELTA Pro Ultra on Amazon — $4,849 base
Sizing — house size × loads × watts
| Home size | Coverage scope | Running W | Surge W | Best fit |
|---|---|---|---|---|
| Apartment / 800 sqft | Fridge, internet, lights, phone | 1,200 W | 2,500 W | EcoFlow DELTA 2 / Honda EU2200i |
| 1,200-1,800 sqft | + furnace blower, microwave, TV | 3,500 W | 5,500 W | Honda EU7000iS / DELTA Pro |
| 1,800-2,500 sqft | + well pump, sump, garage door | 5,500-7,500 W | 9,000-11,000 W | Champion 100165 / WGen9500DF |
| 2,500-3,500 sqft | + central AC, electric range | 9,500-12,000 W | 14,000-18,000 W | WGen 12,500W or 16-18 kW Standby |
| 3,500+ sqft | Everything + 4-ton AC + dryer | 18,000-22,000 W | 25,000+ W | 22-26 kW Standby (Generac 7210) |
Transfer switch reality — and the suicide-cord rule
There are three legal ways to connect a generator to your house, and one illegal one that kills people.
Option A — Extension cords only (legal, lowest cost). Run cords from the portable to the fridge and a couple of lamps. No panel connection. Limit: you can't run hardwired loads (furnace, well pump, AC). This is what 60% of portable-generator buyers actually need.
Option B — Manual interlock kit (legal, $400-$800 installed). A listed interlock plate slides over your main breaker so it can't be on at the same time as a backfed generator breaker. Pair with an L14-30 generator inlet on the outside of the house. Licensed electrician must install under NEC 702.5. You manually flip breakers to choose which circuits run.
Option C — Automatic Transfer Switch / ATS (required for standby, $1,500-$3,500 installed). A 200A service-rated ATS sits between your meter and your panel. When grid power drops, it senses the outage in 2-5 seconds, starts the standby gen, and switches the house over in 10 seconds total. Required by NEC 702.5 for any permanently-installed standby system.
A double-male-ended cord plugged into the generator on one end and a 240V dryer or range outlet on the other. The 240V from your generator goes backward through your panel, into the utility transformer, gets stepped UP to 7,200V on the lines, and electrocutes the lineworker who was told the line was dead. An estimated 15-20 lineworkers die per year from backfeeding. It voids your homeowner's insurance, fries your generator when grid power returns, and starts fires. There is no scenario where this is OK. The interlock kit (Option B) is the same idea done legally for $400.
FAQ
How big a generator do I need?
Essentials only: 5,000-7,500 W running. House + central AC: 9,500-12,000 W. Whole house with 4-ton AC + electric range + dryer: 22-26 kW standby.
Portable vs standby?
Portable if outages are <2x/yr and <8 hrs. Standby if you work from home, have well water, medical equipment, or live in storm/ice country.
Are dual-fuel generators worth it?
Yes — gasoline degrades in 6 months; propane stores indefinitely. Storm cuts power to gas station pumps → BBQ tank in the garage runs your fridge.
Can I plug a generator into my dryer outlet?
No — that's the suicide cord. Kills lineworkers, voids insurance, violates NEC 702.5. Legal version: L14-30 inlet + interlock kit, licensed electrician, $400-$800.
Will a solar generator run my whole house?
A 7,200W battery (EcoFlow DELTA Pro Ultra) ties into transfer switch and runs the house like a standby — for 6-12 hrs per 6 kWh. Multi-day outages still need gas-fired standby.
The bottom line
If outages hit you a few times a year for under 8 hours, buy a Champion 100165 dual-fuel portable plus an interlock kit installed by a licensed electrician — about $1,500 all-in and it carries the essentials. If you need clean sine wave for boiler controls + electronics, step up to the Honda EU7000iS. If you work from home, have a well, or someone in the house is on medical equipment, spend the $11K-$15K on a Generac Guardian 24kW with ATS. Silent, fume-free backup for short outages: EcoFlow DELTA Pro Ultra.
Affiliate disclosure: Building Talks may earn a small commission from qualifying purchases. Pricing subject to change.
Editorial standards: Cited authorities include UL 2200 (stationary engine generator assemblies), NFPA 110 (emergency and standby power systems), NEC Article 702 (optional standby systems), CDC Generator Carbon Monoxide Safety guidance. Reviewed by Al, Building Doctor — 18 years Chief Engineer Class A commercial electrical.